This edition provides a step-by-step guide to implementing particular methodologies, while simultaneously encouraging a strong awareness of philosophical assumptions.

When he moved to the mountains of Andalucia in 1999, the first housewarming present John Gill received was a telescope. While small - a three-inch aperture reflector, nicknamed Cleo, after its donor - it rekindled a childhood fascination with astronomy and set him on a journey into both space and time. From a rooftop terrace half a mile above sea level in the Serrania de Ronda mountains, he began locally, with the Moon, but soon found himself at the limits of the solar system. With Cleo's reach failing, he hitched aboard a variety of other craft - from the Royal Observatory at Greenwich to...